Electronic watch



FIG. 1 is a front and top, left perspective view of an electronic watch showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevational view thereof. 

The ornamental design for an electronic watch, as shown and described. 